Valve



April 24. 1926. 1,667,698

' W. EGGLESTON VALVE Filed April '28. 1926 INYVVENTOR.

fi A TTORNEY.

Patented Apn 24, 1928 UNITED STATES PATENT- OFFICE.

LEWIS W. EGGLESTON, 01? CLARENCE TOWNSHIP, ERIE.COUNTY, NEW :YOBK, 'AS-SIGNOR TO AMERICAN BADIATOR- COMPANY, OF NEW YORK, N. vY., CORPORA- TIONOF NEW JERSEY.

VALVE.

"A lication 111 5 April 2a, 1926. Serial No, 105,056.

My: invention relates broadly and generallyto new and usefulimprovements'ln valves,

provide a-valve which-will be simple in iconstruction, comparativelycheap and easy to manufacture, andwhich will be certain and efiicient inoperation, H u c I The invention consists in the improved constructionand combination of parts and their aggronpment in operative combination,to be more fully described hereinafter, and the novelty of which willbeparticularly pointed out and distinctly claimed. Inthe accompanyingdrawings to as a part of this specification, I have fully and clearlyillustrated a preferredembodimentof my invention and in which drewings pf v Figure 1 is a central vertical section through a structure embodyingthe invention;

Fig. 2

is a top planview of one of .the

valve, and

Fig. 3 is a transverse longitudinal section through a valve part andadapted to cooper-,

ate with the seat to control the flow or relief of a fluid through thevalve casing.

Referring to the drawings by, characters of reference. A designatesgenerally a casing or body preferablyof cast-metal, and which maybe-ofa'ny suitable size and external configuration to suit titfor thepurposes for whichit is employed. The body A preferably-con'iprises alower part or section 1, including an intermediate part 2 enclosing aflow chamber 3, which may be sul'istantiallv circular in horizontalcross-section, as shown in Fig. 2-, and with which is integrallyforinedian external nipple 4: having a central port or passage 5 whichserves as an inlet when the device isemployed as a-pressurewhich thereis-a pressure offiuid to be con relief valve. Thenipple is preferablyinternally threaded, as at- 6, whereby the body may be connected toan'inlet pipe or other element communicating with a chamber in be takenparts or sections of the body or casing of the trolled or relieved. iThe wall 2 is provided at its upper portion with an annular flange orextension 7 having an internal thread 8, and atthebase of which is aninternal annu lar shoulder-or seat9, for a purpose to be presentlydescribed, The casing or body is completed by an upper part- 10containing a flow chamber or passage 11, said part being in generalcircular in horizontal cross-section, and having at its lower endportion 10 an external'threa-d 12 adapted to mesh with thethreads 8heretofore described, whereby the parts of the casing or bo'dy areassembled in fluid-tight. relation to each other. Theupper part 10 isprovided with 'a connection, preferably in the form of a lateral- 1ydirected nipple 13, internally threaded, as

at l hwhereby the body may be connected to an outflow p pe, if desired,when the device is employed as a relief valve.

The lower bo'dysection 2 is provided with a transverse partition or web15, preferably cast integral with said part, and provided with one orinore'outeror peripheral ports or passages 16 communicating with thechamber 3. The upper face of the 'web or partition'15 is provided at itscentral portion' with a. preferably circular recess or pocket 17, andthe under face of said web is provided with a downwardly extending boss18 having a central threaded opening 19. lVithin the recess'o'r pocket1'7'is arranged a preferably fiat circular disk 20 of suitable packingmaterial, such for example rubber. fiber, or other material suitable forthe purpose, which disk serves as a valve surface or seat, as will behereinafter described. Thedisk 20 is held rigidly in place, preferablyby a vertical post member 21 extending abovethe web 15 into the casingpart 10, said post having an intermediate shoulder 22 and a lowerthreaded. extension 2?), said extension being adapted to be passedthrough a central opening 24 in the seat disk 20,- and bescrewed intothe boss18- \Vhen the'post member is screwed in place, as shown inFig. 1. the shoulder 22 engages the upper face of.

the disk 20, whereby the latter is securely the disk 20 to control flowfrom the chamber v 8 through the port or ports 16 and from the casing.This valve member (see particularly F 3) comprises a cup-shapedmemberclosed by a re-entrant conical wall 28, said.

conical Wall having at its central portion or apex a guide opening '25.-The point-"at which the lower edge of the cylindrical wall 26 arid-thelower edge portion of the re-entrant bottom wall are merged or joined,is formed to constitute an annular valve face v30 of a diameter lessthan that of the seat disk 20 heretofore described, so as .to seatwithin the circumference of said d'isln'as shown in Fig. 1. The valvemember is arranged soas to beconcentric with said disk 20, and with thecentral opening 29' fitting over the guide post 21 heretofore described,so that the valve will be held radially in proper relation to the upperface of the disk 20 and will be guided in its movements to ward and awayfrom said dislc.

Clamped betweenthe lower end portion 10 of part 10 and the/shoulder 9heretofore described, is a ring-or annular plate 31., whichis providedwith a central opening 31 through which the valve 25 projects, saidopening'being' of such diameter as to provide an annular flow, space orpassage between the inner edge of said plate and the outer face ofsaidvalve. "Connectedand sealed by any suitable'means to the innerfedgefof the plate'81, as at 32, is. the lower edge of expansiblecollapsible element, comprising a metallic cylindrical bellows 38 havingparallel inward and outward corrugationsor bends, rendering the sameresilient, and expan'sible and collapsible longi' tudinally. The upperend of thisbellows' is connected. and sealed, as at 34;, to the outeredge of the flange 27 heretofore described, the arrangement being suchthat the bellows provides a fluid-tight connection between the-plate 31and flange 27. It will be seen that the bellows is arranged concentricto the cylindrical valve member and is spaced therefrom to form .a-pressure-receiving chamber surrounding the valve member, and which isopen to'the pressure of the medium within the chamber 3 and the valvebody. Any pressure existing in chamber 3 Will be exerted through theports or passages 16 into the pressure chamber formed by thebellows andvalve, and will tend to move the valve .upward to open position relativeto the seat 20.

The valve is provided with suitable ports in the conical re-entrant wall28, said ports being located between the valve face and the center ofsaid wall, so that when the valve is seated on the surface 20 flow willbe that-said holl'owssv-alve member need not necessarily becylindricalin form, so long as it is tubular and provided with aseat-engaging face whi'chis theequivalent-of; the face 30.

I will now describe preferred means for resisting the openingmovementofthe valve under pressures existing in the'chamber fi, and fordetermining the pointorpressureat which the valve will open: 'Slidablydisposed upon the p'ost'2l is an annular spring seat or collarrestingupon 'theupper'inner edge of the re-entrant .wall 28, as shown inFig. 1. On the seat 36 is'held thelower end of a compression spring 37-,theupper end of which is seatedon a suitable spring seat 38 on a'plug'39, threaded, at' lt),-- into the upper wall of the casinglpart 1'0.='-It will be apparent that by screwing the plug 39 toward or away fromtheyvalve', theforce of the spring maybe regulated so as to determinethe pressure at which the valve will j be raised from its seat.

It is believed the operation 'will be-apparent from theforegoingdesoription when taken in connection with the drawings-but itmay be briefly stated as follows The. parts being assembled as shown,the plug 59 is turned in one direction or the other so as to fix theresistance of the spring at such a point to correspondto the-pressure atwhich itis desired the valve shall open. It will be understood that forpressures beneath that for which the spring is set, the spring serves tohold the valve in closed position, that is, with the valve face 30 influid-tight engagement with the upper face of the'dislr 20. So long asthe pressure beneath the valve re mains below the determined point,the-valve is closed, but when thepressure exceeds" the point for whichthe spring is sea-said pressure will be exerted upon theexpansiblecollapsible element and the under face of the flange 27 tolift the valve-,thereby removing the face 30 from thedisk 20. Themovement just describedpermit-s the pressure or flow to escape or berelieved by passing from chamber 3, through ports 16, beneath the valveface 30, through the ports 85, the hollow portion'of-the valvememberandfout through the upper casing part "10 andmpple 14. Thevalveremains 'open l-intilthe pressure dropsbelow the point 'at'which-the spring is set, whereupon the springexerts its force ex'pansibly tomove thevalve-to bring the .seat 30 against the upper face of the'diskand thereby close or cut off the flow through the valve body.

Among other advantages possessed bythe construction are the following:By the arrangement of the diaphragm or bellows eX- ternal .to the valve,and the provision of the fiange27,;the area subjected to pressure may bemade several times the area of the valve seat, so that the power orlifting force acting on the valve to raise it from its seat is increasedindirect proportion to the increase in areain other words,thearea'responsive to pressure may be made several times greater than ispossible in those constructions wherein 'the valve face or disk alone issubjected to the pressure depended upon to Open the same. This isaccomplished by making the internal area of the flange 27 such that thepowereifect with respect to the area ofthe valve seatwill be multipliedor increased so that a rise in pressure above the determined operatingpressure will be certain to lift the valve from its seat. A furtheradvantage is that the valve seatserves to a considerable degree tolimit'the forn'iation of scale about the valve and seat, which formationmight tend to seal the valve and prevent its opening movement at thedesired pressure. v I I Another advantage is that thepower of thepressure-is multiplied to such an extent on the valve as .to breakthesame loose from the dislrQO, even though the valve become sealed byscale to theseat.

What I claim and desire to secure by Let-' ters Patent of theUnitedSt-ates is:

1. A valve of thecharacter described comprising a body having ports, apartition in said body and between said ports, said partition havingavalve-engaging surface, and said body having a passage around saidpartition, a. hollow valve member having a passage therethrough andhaving an end por tion adapted to seat on said surface to pre-' ventflow through said valve member, a flexible sealing element connectingsaid valve member to the body and exposed to pressure within the valvebody, said valve member having a wall within said end portion and meansopposing said pressure and engaging said wall to urgethe valve membertoward its seat on said surface. I

2. A valveof the character described comprising a body having ports, apartition in said body and between said ports, saidpar tition having avalve-engaging surface, and said body having a? passage around saidpartition. a valve member having a-"passage therethrough and having anend portion adapted to seat on saidsurface toprevent flow through saidvalve member, said valve memberhaving a guide opening, a flexiblesealing element connecting said valve member to the body and. exposed topressure within the valve body, spring means opposing said pressure andurging the valve member toward its seat on said surface and guide meanscooperating with the guide opening through said valve and with saidspring means.

3. A valve of the character described comprising a body having an inletport and an outlet port, a partition in said body between said ports,said partition having a valve engaging surface, and said body having apassage around said partition, a hollow valve member having an endportion adapted to.

seat on said surface to prevent flow through said valve member, aflexible, eXpa-nsiblethe body and preventing flow therethrough exceptthrough said hollow valve and exposed to pressure exerted through saidinlet port and the passage around said partition to'move the valvemember from its seat, a

supporting collar within said hollo-W valve member and means engagingsaid collar being arranged above the chamber 8 1s away ifrom thecirculation of water orfluid, which for 'urging said valve member to itsseat on said surface. 1

4. A valve of-the character described comprising a body or casing havingports, a partition'in said body and between said ports, said partitionhaving a valve-engaging surface, and said bodyhaving a passage aroundsaid partition, a cup-shaped valve member having an annular portionadapted to seat on said surface and having a flow passage within saidannular portion, a flexible, eXpansible-colla'psible' elementsurrounding said valve member and sealing the valve meniberto the body,said element forminga pressure chamber around the valve member, saidpressure chamber being in communication with the said passage aroundsaidpartition, guide means for said valve member and means for urging saidvalve member to its seat on said surface.

5. A valve of the character described com prising a body having ports, apartition in said body and between said ports, said partition having avalve-engaging surface, and said body having a passage around saidpartition, a cup-shaped valve member having an annular end. portionadapted to seat on said surface and having an end wall provided saidvalve member to its seat onsaid surface.

' 6. A valve of the characterdescribed coin: prlsmg a body having ports,a partition in ion portion, a flexible, ex pansible-collapsible ele-'ment connected to said valve member and sealing the valve member to thebody, said element forming a pressure chamber around the valve member,said pressure chamber being in communication with said passage aroundsaid partition, guide means for said valve member, and means forurginglsaid valve member: to its seat on said surface.

7. A valve, of the character described comprising a body having ports, apartition in said body and between said ports, said partion having avalve-engaging surface, and said'body having a passage around saidpartition, a cup-shaped valve member hav ing an annular end portionadapted to seat on said surface and having an end wall provided. with aport located within said annular end portion, a guide post cooperatingwith said valve n'rember, a flexible, expansis hie-collapsible elementconnected to said valve member and sealing the valve member to the body,said element forming a pressure chamber around the valve men'lb'er, saidpressure chamber being in communication with said passage around saidpartition, and means for urging said valve member to its seat on saidsurface.

8. A valve of the character described comprising a body havingportsapartitionin said body and between said ports, said-partition having avalve-engaging surface, and said body having a passage around saidpartition, a cup-shaped'valve member having an annular end portionadapted to seat on said surface and having an end wall provided with aportlocated within said annular end portion, said end wall also having aguide opening, a guide post extending through said guide opening,afiexible, expansiblecollapsible element, connected to said valvel'llOllll'K-l and sealing the valve member to the body, said elementforming a pressure ('ilial'l'lbfil. around the valve member, saidpressure chamber being in communication with said passage around saidpartition, and means for urging said valve member to its seat onsaidsurface;

9. A valve of the character described comprising a body having ports, apartition in said bo'dy and between said ports, said partition having avalve-engaging surface, and said body having a passage around saidpartition, acup-shaped valve member having-anannular end portion adaptedto seat on saidsurface and having an end wall provided witlra portlocated within said annular end portion, sa-id'end wall also having aguide opening, a guide post support ed on said/partition and extendingthrough said guide opening, a flexible, expansible collapsible elementconnected to said valve member and sealing the valve 'membei' to thebody, said element forming a pressure (fl'ltlil'llli around the valve1)'1'81Tll)( li,, $t1ltl iiressure chamber being i in communication withsaid passage aroundsaid partition, and" means for urging said valvemember, toits seat OliSHltl surface.

10. A valve of the character described comprising a body having ports, apartition in said body and between said ports, said partition having avalve engaging surface, and said body havinga passage around saidpartition, a cup-shaped valve member having at one end an annularportion adapted to seat onsaid surface and having an end wall'providedwith a port located within said annular end portion, the opposite end:

portion ot'said valve member havingan external annulariiangc, aflexible, eXp ansiblevalve member having anannular end portion adaptedto seat on said packing, means to guide said valve and toretain saidpacking in said recess, said valve member having an annular externalflange, a flexible member sealiugsaid flange to the casing a-nd preventing flow through the latter except tlu'ough said valve member, andresilient means urging said valve member to its seat on said packing, I7

12. A valve of the character described comprising a body having ports, apartition in said body and between said ports, said partition having avalve-engaging surtace,

and th'e'body having a passage around said partition, a cup-shaped valvemember having an annular portionat one end adapted to seaton saidsurtace, said valve member having an end wall provided with a. flow portand a guide opening, a guide post mounted on said partition andextending through said guide opening, said valve member having anexternal annular flange, a flexible, expansible collapsible elementsurrounding the valve member and sealing said flange tO',tl1 body andforming a pressure chamber open to said passage around the )artition anda sarin ur in the valve 7 b C D ill) Hlil

member to its seat on the partition and opposing pressure in saidpressure chamber.

13. A valve of the character described comprising a body having ports, apartition in said body and between said ports,,said

partition having a valve-engaging surface,

and the body having a passage around said partition, a cup-shaped Valvemember having an annular portion at one end adapted to seat on saidsurface, said valve member having an end Wall provided with a flow portand a guide opening, a guide post mounted on said partition andextending through said guide opening, said valve member having anexternal annular flange, .a flexible GXPElIlSlble-GOllHPSlblQ elementsurrounding the valve member and sealing said flange to the body andforming a-pressure chamber open to said passage around the partition,and a sprmg mounted on said guide post, said spring urging the valveLEWIS W. EGGLESTON.

